Period 1920-1934
Manuscripts of some of his publications, including `Bergson der Metaphysiker der Gegenrevolution' c. 1930, `Die Abrüstungsfrage' c. 1931 and `Steuerpsychologie' c. 1932, with a few accompanying letters 1932; volume of copies of the Arbeiter-Zeitung with articles by Szende 1921-1932 and other copies...

Period 1990-2004
Correspondence and documents concerning his activities as anti-Zionist, anti-militarist, humanist struggler 1982-1994; documents relating to his work to realise his dream of a communitarian commune 1990-1999; press release on the death of Toma Šik 2004.

Documents on the Communist Party of Great Britain, the debates in the communist movement after the death of Stalin, the cry for reforms in Hungary and Poland as well as the position of Jews in the Soviet Union and other Eastern European countries 1956-1958, 1966.